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Mathematics 23 Online
OpenStudy (anonymous):

What is the measure of arc XY?

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

use formula #4 on this page http://www.regentsprep.org/Regents/math/geometry/GP15/CircleAngles.htm to get Angle ZWV = (1/2)*(arc XY + arc ZV) 90 = (1/2)*(arc XY + 43) 90*2 = arc XY + 43 180 = arc XY + 43 180-43 = arc XY 137 = arc XY arc XY = 137 degrees

OpenStudy (anonymous):

thank you! @jim_thompson5910

jimthompson5910 (jim_thompson5910):

np

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